Marino, a former U.S. attorney and district attorney, believes "there's probable cause" to investigate criminal wrongdoing that resulted in denying sick veterans timely healthcare at a VA facility in Phoenix, some of whom may have died while awaiting medical treatment.

"We need to get to the bottom of this, we need to make sure the Justice Department and the FBI has the resources, has the money, has the investigators. And anybody obstructing this should be prosecuted as well and if we find out there were people changing documents just to get bonuses, these people need to go to jail," he said.